Currently, we can add rules for learners to self-enroll in a session. This basically is 1/2 way to where this needs to be. We can add an auto-enrollment on the curriculum level, then the user must go through each course to select a session (and using the self-enrollment rules (by group), we've limited that selection to only one option). This becomes simply a busy-work task to expect learners to go through and manually select the only session available to them for each of the many courses listed with the curriculum.
If we could add an auto-enrollment option at the session level, this would effectively eliminate the confusing and frustrating busy work involved in ILC registration.